Online subtitle syncer

Shift subtitles to be in sync with audio and video offset: Easily fix .srt files by adding or reducing the sub delay online in an instant.

Start here by choosing the .srt subtitle file to fix.

File format not recognized or file damaged. Please use standard .srt subtitles only.

shift forward
Choose this option in case the subs are appearing too late. Reduces the delay before the subtitles will start, thus shifting them forwards. Provide below the amount of observed sub/audio offset.

shift backward
Choose this option in case the subs are appearing too early. Increases the delay before the subtitles will start, thus shifting them backwards. Provide below the amount of observed sub/audio offset.

start with first sentence
Choose this option in order to let the first subtitle word start at a fixed time, instead of providing the sub/audio difference. Give the time this first entry is to be heard below.

minutes
seconds
milliseconds

About

A special feature is the possibility to choose a fixed subtitle delay. By this means, one does not have to provide an audio vs. sub offset but can pick the first word’s absolute timestamp instead.

Negative delays are support as well, the three different units are simply summed up. While this might become confusing, this allows for fine-tuning with a smaller granularity. The overall applied time shift (in ms) gets appended to the download filename.

If you encounter encoding issues when syncing valid .srt subs, please make sure the input file is in UTF-8.

Worth mentioning might also be that your privacy is preserved: No data is actually transferred, as all your subtitles are processed locally in your browser. In fact, hackitude cannot tell which subs are resynced or even whether any subtitles were fixed at all.